Harddrive B-38-4 Custom Derby Cover Chrome FLT For Harley Road Glide 2016-2020 Options:CUSTOM DERBY COVER CHROME FLT 16-UP | 820-51874 | B-38-4 Simple bolt-on installation is all

Simple bolt-on installation is all that is required with no modifications needed

Stainless steel conversion kits include only what’s needed to convert your head to the long-life stainless steel Black Diamond intake valves

Adjustable pressure arms increase spring pressure as rpm increase

Fully expandable for more space when needed

Harddrive B-38-4 Custom Derby Cover Chrome FLT For Harley Road Glide 2016-2020 Options:CUSTOM DERBY COVER CHROME FLT 16-UP | 820-51874 | B-38-4 Simple bolt-on installation is allFeatures Prominently raised design with 3 milled grooves gives your primary a beefier look Triple chrome plated or black finish available Matching points covers available in the engine section